Kohler — Install Push Rod Assembly and Adjust Valve Lash
Adjustments · Valve Train
From a Kohler service manual covering: 1P14 690 11, XTX650, XTX675, XTX775. Check it applies to your exact model before use.
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Before you start
- Installation and seating of push rods into tappet recesses is critical
Procedure
- With tabs on guide plate facing down, install guide plate and secure with rocker studs.
- Tighten rocker studs to 13.6 N·m (120 in. lb.).
- Install push rods into intake and exhaust positions, as previously marked.
- Apply grease to contact surfaces of rocker arms and pivots.
- Install rocker arms onto rocker studs. Match rocker arm dimples with round push rod ends.
- Loosely install pivots and jam nuts onto rocker studs.
- Inspect push rod to guide plate clearance; push rods need to be centered in guide plate opening.
- With piston at TDC of compression stroke, insert a 0.1 mm (0.004 in.) flat feeler gauge between one valve stem and rocker arm.
- Tighten rocker pivot until a slight drag is felt on feeler gauge. Hold nut and tighten jam nut to 9.5 N·m (84 in. lb.). Recheck lash.
- Perform same adjustment procedure on opposite valve.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Intake valve clearance 0.0762-0.127 mm (0.003-0.005 in.)
- Exhaust valve clearance 0.0762-0.127 mm (0.003-0.005 in.)
- Rocker stud torque 13.6 N·m (120 in. lb.)
- Jam nut torque 9.5 N·m (84 in. lb.)
Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.